US20090057365A1 - Gas Combustion type driving tool - Google Patents
Gas Combustion type driving tool Download PDFInfo
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- US20090057365A1 US20090057365A1 US11/919,035 US91903506A US2009057365A1 US 20090057365 A1 US20090057365 A1 US 20090057365A1 US 91903506 A US91903506 A US 91903506A US 2009057365 A1 US2009057365 A1 US 2009057365A1
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- feed
- gas
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- piston
- delay
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C1/00—Hand-held nailing tools; Nail feeding devices
- B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C1/00—Hand-held nailing tools; Nail feeding devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
- B27F7/00—Nailing or stapling; Nailed or stapled work
- B27F7/02—Nailing machines
- B27F7/05—Driving means
- B27F7/09—Driving means operated by fluid pressure
Definitions
- the present invention relates to a gas combustion type driving tool which comprises: a combustion chamber for explosively combusting a mixture gas produced by stirring and mixing together combustible gas and air; a drive piston/cylinder device which is driven by a combustion gas; a nose part for slidingly guiding a driver connected to the drive piston to thereby drive out a fastener therefrom; a feed piston/cylinder device for feeding the fastener to the nose part; and an operation delay device for delaying a retreat operation of a feed claw included in the feed piston/cylinder device.
- a combustion gas drive type driving tool in which combustible gas is charged into a combustion chamber formed in a hermetically closed manner within a tool body to stir up a mixed gas composed of combustible gas and air within the combustion chamber, a stirred mixed gas is combusted within the combustion chamber to thereby generate a high pressure combustion gas, and the high pressure combustion gas is applied to a striking piston accommodated within a striking cylinder to thereby impactively drive the striking piston within the striking cylinder, whereby a nail supplied to a nose part disposed in the lower portion of the tool body can be driven into steel or concrete by a driver connected to the lower surface side of the drive piston.
- JP-A-08-252806 In such combustion gas type driving tool, not only a container such as a gas cylinder filled with combustible gas is mounted into the tool but also a battery functioning as a power supply for igniting the combustible gas is mounted on the tool, thereby forming the tool as a portable tool.
- this type of driving tool can carry out an operation to drive a nail or a pin without being restrained by a power supply source for supplying power, such as compressed air or the like.
- a feed device which sequentially feeds connected fasteners accommodated in a magazine into the nose part.
- a feed device of this type there is known a device structured such that connected fasteners, which are composed of a large number of fasteners connected together in a straight line, are accommodated in a sheath-shaped magazine, the connected fasteners are normally pressed toward the nose part by a spring having a constant output and, immediately after a fastener supplied to an eject opening formed in the nose part is driven, a next faster is supplied into the nose part.
- a feed device used to feed the fasteners accommodated in the cylindrical-shaped magazine generally, there is known a feed piston/cylinder device.
- This is a device in which, on a feed piston slidably accommodated in a feed cylinder, there is provided a feed claw engageable with and removable from the connected fasteners accommodated in the magazine, and the feed claw is reciprocated in a feed direction for feeding the feed claw toward the nose part side and in a retreat direction opposite to the feed direction.
- the feed piston of the feed piston/cylinder device is made to reciprocate using a spring and the pressure of combustion gas in a combustion chamber.
- the feeding operation of the feed piston is executed by a spring, while the retreating operation of the feed piston is executed using the pressure of the combustion gas.
- One or more embodiments of the invention provides a gas combustion type driving tool which not only can supply sufficiently high pressure to a feed piston/cylinder device functioning as a fastener feed device but also can delay the retreat operation of a feed piston included in the feed piston/cylinder device.
- a gas combustion type driving tool is provided with: a combustion chamber for explosively combusting a mixed gas produced by stirring and mixing combustible gas and air; a nose part for applying the thus produced high pressure combustion gas to a striking piston accommodated within a striking cylinder to impactively drive the striking piston within the striking cylinder to thereby slide and guide a driver connected to the lower surface side of the striking piston so as to drive out a fastener therefrom; a feed piston/cylinder device for reciprocating a feed claw engageable with and removable from connected fasteners accommodated in a magazine in a feed direction to feed it toward the nose part and in a retreat direction opposite to the feed direction; a spring disposed on the feed cylinder of the feed piston/cylinder device for normally urging a feed piston including the above-mentioned feed claw in the feed direction; a gas conduit interposed between the above combustion chamber and the above feed piston/cylinder; and an operation delay device disposed in the gas conduit for actuating the feed piston of the feed
- the operation delay device may also include a delay cylinder which is disposed in the intermediate portion of the gas, while one end of the delay cylinder is opened to the combustion chamber with the other end thereof opened to the feed cylinder.
- a delay piston slidable within the delay cylinder due to the pressure of the combustion gas is slid from one end of the delay cylinder to the other end thereof due to the pressure of the combustion gas, air compressed within the delay cylinder is supplied from the other end of the delay cylinder to the feed cylinder.
- the operation delay device may also include a gas storing space portion or a drawing portion which is formed in the gas conduit and is used to delay the supply of the combustion gas from the combustion chamber to the feed cylinder.
- the operation delay device may also contain a timing valve device disposed in the intermediate portion of the gas conduit and including a valve member, in which, when the valve member is present in one end of the operation delay device, it closes the gas conduit and, when the valve member is moved to the other end of the operation delay device due to the pressure of the combustion gas, it opens the gas conduit.
- the gas combustion type driving tool there is interposed a gas conduit between the combustion chamber and feed piston/cylinder device and, in the gas conduit, there is disposed the operation delay device for actuating the feed piston of the feed piston/cylinder device against the above-mentioned spring in such a manner that such actuation is delayed with respect to the operation of the striking piston caused by the combustion of the mixed gas within the combustion chamber.
- the striking piston is operated for striking and the feed piston is operated for retreating in such a manner that the operation of the feed piston is delayed with respect to the striking operation of the striking piston: that is, until the leading nail within the nose part is struck by the driver and driven out from the nose part by the striking operation of the striking piston, the feed piston is not operated for retreating. Therefore, when the leading nail is driven out from the nose part, it is pressed against the inner surface of the nose part and is thus stable in attitude. Thus, the leading nail can be driven out properly.
- the pressure of the combustion gas combusted within the combustion chamber (in the upper portion of the striking piston) is fed from the gas conduit to the feed piston/cylinder device, a sufficiently high pressure can be supplied to the feed piston/cylinder device.
- a delay cylinder having one end opened to the combustion chamber with the other end opened to the feed cylinder and, when a delay piston slidable within the delay cylinder due to the pressure of the combustion gas is slid from the above-mentioned one end of the delay cylinder to the other end thereof, air compressed within the delay cylinder is supplied from the other end of the other end of the delay cylinder to the feed cylinder, the supply of the gas pressure on the combustion chamber side can be delayed by the time necessary for the pressure of the air, which is compressed when the delay piston slides from one end to the other end of the delay cylinder, to rise so sufficiently as to be able to retreat the feed piston.
- the retreat operation of the feed piston can be delayed by the time necessary for the air pressure to rise so sufficiently as to be able to retreat the feed piston.
- a timing valve device including a valve member which, when the valve member is present in one end of the timing valve device, closes the gas conduit connecting together the combustion chamber and feed cylinder and, when the valve member is moved to the other end of the timing valve device due to the pressure of the combustion gas, opens the gas conduit, even when the mixed gas is burned within the combustion chamber, during the time while the valve member is moving from its top dead center position to the gas conduit opening position, the gas conduit remains closed and thus the pressure of the combustion gas is not supplied to the delay cylinder. Therefore, according to this structure, the retreat operation of the feed piston can be delayed by the time sufficient to retreat the feed piston.
- FIG. 1 is a longitudinal section view of the main portions of a gas combustion type nail driving tool, showing a state in which the driving tool is not in operation.
- FIG. 2 is a front view of the main portions of a nail driving tool, showing a state how a contact arm and a link member are mounted.
- FIG. 3 is a longitudinal section view of the nail driving tool, showing a state where its nail driving operation is started.
- FIG. 4 is a longitudinal section view of the nail driving tool, showing a state just after end of the nail driving operation.
- FIG. 5A is a longitudinal section view of the nail driving tool when viewed from behind, showing the nail feeding state of a nail feed claw.
- FIG. 5B is an explanatory view of a nail feed piston/cylinder device and a nail feed claw.
- FIG. 6 is a longitudinal section view of a delay piston/cylinder device, showing the retreat starting state of a nail feed piston including in the delay piston/cylinder device.
- FIG. 7 is a longitudinal section view of the delay piston/cylinder device, showing the retreat state of the nail feed piston of the delay piston/cylinder device.
- FIG. 8 is a longitudinal section view of a striking piston, showing the returning state thereof.
- FIG. 9 is a longitudinal section view of a gas combustion type nail driving tool, showing it together with a delay chamber device.
- FIG. 10 is a longitudinal section view of a gas combustion type nail driving tool, showing it together with a delay drawing device.
- FIG. 11 is a longitudinal section view of a gas combustion type nail driving tool, showing it together with a delay timing valve device.
- FIG. 12 is a timing chart, showing a difference between the timings of a feed claw and a striking piston when a delay operation device is provided.
- FIG. 13 is a timing chart, showing a difference between the timings a feed claw and striking piston when a combustion chamber and a feed cylinder are directly coupled to each other.
- a driving tool according to the invention is not limited to a nail driving tool. That is, the invention can be applied to a driving tool which feeds connected fasteners such as headed bar members (nails or screws) and headless bar members (parallel pins) while transmitting power using the combustion of a mixed gas.
- connected fasteners such as headed bar members (nails or screws) and headless bar members (parallel pins) while transmitting power using the combustion of a mixed gas.
- reference numeral 1 designates the body of a gas combustion type nail driving tool.
- a grip 2 and a magazine 3 To the body 1 , there are connected a grip 2 and a magazine 3 ; and, on the body 1 , there are provided a striking piston/cylinder device 4 , a combustion chamber 5 , a nose part 6 , and a feed piston/cylinder device 7 for nail feeding.
- the striking piston/cylinder device 4 is structured such that a striking piston 10 is slidably accommodated within a striking cylinder 9 and a driver 11 is connected to the lower portion of the striking piston 10 integrally therewith.
- the combustion chamber 5 is defined by the upper end face of the striking piston 10 , an upper wall (a cylinder head) 13 formed within the striking cylinder 9 and an upper housing 12 , and a ring-shaped movable sleeve 14 interposed between the upper end face of the striking piston 10 and upper wall 13 . And, when the movable sleeve 14 is moved upward, there is formed the closed combustion chamber 5 ; and, when the movable sleeve 14 is moved downward, the upper portion of the combustion chamber 5 is allowed to communicate with the atmosphere.
- the link member 19 is structured such that it includes a basket-shaped bottom portion 19 a disposed downwardly of the striking cylinder 9 and an arm portion 19 b extending along the outer peripheral portion of the striking cylinder 9 from the end portion of the basket-shaped bottom portion 19 a .
- the upper end of the arm portion 19 b is connected to the movable sleeve 14 , while the basket-shaped bottom portion 19 a is energized downward by a spring 29 which is interposed between the lower surface of the striking cylinder 9 and basket-shaped bottom portion 19 a .
- the contact arm 15 is disposed such that it can be slidingly moved in the vertical direction along the nose part 6 .
- the lower end 15 a of the contact arm 15 is projected from the nose part 6 and, when the lower end 15 a is pressed together with the nose part 6 against a member to be nail-driven P, the lower end 15 a can be moved upward with respect to the nose part 6 (see FIG. 3 ).
- the lower surface of the basket-shaped bottom portion 19 a of the link member 19 is engaged with the upper end 15 b of the contact arm 15 .
- the contact arm 15 is moved upward with respect to the nose part 6 to push up the link member 19 against the urging force of the spring 29 , so that the movable sleeve 14 is moved upward.
- the contact arm 15 is relatively moved downward, and the link member 19 and movable sleeve 14 are respectively moved downward by the urging force of the spring 29 , thereby opening the combustion chamber 5 to the atmosphere.
- the movable sleeve 14 when actuating the nail driving tool, the movable sleeve 14 is relatively moved up to an upper position shown in FIG. 3 in linking with the operation to press the contact arm 15 against the member to be nail-driven P, thereby shutting out the inside of the combustion chamber 5 from the atmosphere.
- the contact arm 15 when the nail driving tool is lifted upward due to the reaction caused just after execution of a nail driving operation, the contact arm 15 , as shown in FIG. 4 , moves downward along the nose part 6 due to its own dead weight.
- the pressure of the inside of the combustion chamber 5 is held negative just after execution of the nail driving operation, whereas the movable sleeve 14 (and link member 19 ) is held at the same position.
- an injection nozzle 17 in communication with a gas container, and an ignition plug 18 which ignites a mixed gas into combustion.
- a rotary fan 20 which is used to stir up combustible gas injected into the combustion chamber 5 together with the air within the combustion chamber 5 to thereby generate a mixed gas having a given air fuel ratio within the combustion chamber 5 .
- the nose part 6 guides the sliding movement of the driver 11 and also opens to the magazine 3 .
- the feed piston/cylinder device 7 is structured such that, as shown in FIGS. 5A and 5B , to a feed piston 22 slidably accommodated within a feed cylinder 21 , there is connected a feed claw 23 , and the feed claw 23 together with the feed piston 22 is engaged with and disengaged from connected nails N accommodated in the magazine 3 to thereby reciprocate the feed claw 23 and feed piston 22 in a nail feed direction to feed the connected nails N toward the nose part 6 and in a retreat direction opposite to the nail feed direction.
- the feed piston 22 is moved to its moving end in the feed direction, the leading nail N 1 of the connected nails N is pushed into an eject opening 24 formed in the nose part 6 . Therefore, in a state where the feed piston 22 is present at its moving end position in the feed direction, the connected nails N also remain unmoved, whereby the leading nail N 1 is held within the eject opening 24 .
- a spring 25 which normally energizes the feed piston 22 in the feed direction.
- the portion of the feed cylinder 21 on the opposite side of the spring 25 is connected through a gas conduit 26 to the combustion chamber 5 .
- a delay piston/cylinder device A functioning as a delay device in which a delay piston 28 is slidably accommodated within a delay cylinder 27 .
- the delay cylinder 27 is disposed such that its upper end is open to the combustion chamber 5 and its lower end is open to the feed cylinder 21 .
- the delay piston 28 is slidingly moved from the upper end of the delay cylinder 27 to the lower end thereof due to the pressure of the combustion gas, the air is compressed within the delay cylinder 27 ; and, the pressure of the compressed air is supplied from the lower end of the delay cylinder 27 to the feed cylinder 21 .
- a first check valve 31 which is used to take in the air from the atmosphere; and, downwardly of the delay cylinder 27 , there is disposed a second check valve 32 .
- a switch valve 33 which can be actuated in linking with the operation of the link member 19 . Specifically, normally, the valve stem 33 a of the switch valve 33 , as shown in FIG. 1 , is pressed into the bottom portion 19 a (for details, see FIG.
- the ignition plug 18 ignites the mixed gas, with the result that the mixed gas is burned and is thereby expanded explosively.
- the pressure of the combustion gas acts onto the upper surface of the striking piston 10 to thereby drive the striking piston 10 downward, with the result that the driver 11 strikes the leading nail N 1 supplied into the eject opening 24 of the nose part 6 to thereby drive it into the member to be nail-driven P.
- the delay piston 28 is also slidingly moved from the upper end of the delay cylinder 27 down to the lower end thereof.
- the delay piston 28 is also slidingly moved from the upper end of the delay cylinder 27 down to the lower end thereof.
- the supply of the pressure of the combustion gas from the combustion chamber 5 to the feed cylinder 21 when the delay piston 28 is slidingly moved from the upper end of the delay cylinder 27 down to the lower end thereof, can delay the above-mentioned retreat operation by the time necessary for the pressure of the air compressed within the delay cylinder 27 to rise so sufficiently as to retreat the feed piston 22 .
- the feed piston 22 is caused to retreat. Specifically, as shown in FIG. 6 , since the feed claw 23 of the feed piston 22 remains unmoved until the leading nail held within the nose part 6 is struck and driven out from the nose part 6 by the driver 11 due to the striking operation of the striking piston 10 , the leading nail is retained by the inner wall of the eject opening 24 of the nose part 6 and is thereby held stable in attitude. Therefore, the leading nail can be driven out properly. After then, as shown in FIG. 7 , when the delay piston 28 arrives at its bottom dead center, the feed piston 22 returns to its initial position.
- FIG. 12 shows a difference in the operation timing between the striking piston and feed claw (feed piston) in the nail driving operation.
- FIG. 9 shows an operation delay device used instead of the above-mentioned delay piston/cylinder device A.
- This operation delay device B is structured by a delay chamber device which includes a gas storing space portion 35 interposed between the combustion chamber 5 and piston/cylinder device 7 .
- the parts of the operation delay device B which are the same as those of the delay piston/cylinder device A, are given the same designations.
- a series of operations in FIG. 9 in the nail driving operation are also similar to FIGS. 3 , 6 , 7 and 8 , and thus the description thereof is omitted here.
- the pressure of the combustion gas drives the striking piston 10 downward and the driver 11 strikes the leading nail supplied into the eject opening of the nose part 6 , thereby driving it into the member to be nail-driven.
- the pressure of the combustion gas burned in the combustion chamber 5 is supplied from the gas conduit 26 to the feed piston/cylinder device 7 .
- the feed piston 22 cannot be actuated until the combustion gas is filled into the gas storing space portion 35 and the pressure within the gas storing space portion 35 is thereby raised up to a given level.
- the pressure within the gas conduit 25 rises up to a given level, the combustion gas is supplied to the feed cylinder 21 , so that the feed piston 22 is caused to move in the retreat direction.
- the operation of the feed piston 22 can be delayed by the time necessary for the above-mentioned combustion gas pressure to rise up to a level capable of retreating the feed piston 22 . Therefore, the leading nail can be driven into the member to be nail-driven while it is held in a stable attitude.
- the operation delay device may also be structured such that it includes in the gas conduit 26 such a drawing portion 36 for delay as shown in FIG. 10 , instead of the gas storing space portion 35 .
- the retreat operation of the feed piston 22 can be delayed by the time necessary for the pressure of the combustion gas, which has passed through the drawing portion 36 , to rise up to a level capable of retreating the feed piston 22 .
- the position of formation of the drawing portion is not limited to the position shown in FIG. 10 , but the drawing portion may be formed at any position in the gas conduit.
- FIG. 11 shows an operation delay device different from the above-mentioned operation delay device.
- This operation delay device is structured by a timing valve device C for delay which is disposed in the intermediate portion of the gas conduit 26 .
- the parts of the timing valve device C which are the same as those of the delay piston/cylinder device A, are given the same designations.
- a series of operations in FIG. 11 in the nail driving operation are also similar to FIGS. 3 , 6 , 7 and 8 , and thus the description thereof is omitted here.
- the present delaying timing valve device C is structured in the following manner. That is, the device C includes a valve cylinder 40 having openings 37 and 38 the upper ends and side portions of which are respectively connected to the gas conduit 26 .
- a valve member 41 is slidably accommodated within the valve cylinder 40 and is normally energized by a spring 42 such that it is present at its top dead center. When the valve member 41 is present at the top dead center, the gas conduit 26 is closed, whereas, when the valve member 41 moves downward and, as shown by a broken line in FIG. 11 , passes through the side portion opening 38 , the gas conduit 26 is opened.
- the leading nail in the nail driving operation, when the mixed gas within the combustion chamber is ignited and burned in the same manner as described above, owning to the pressure of the combustion gas, the leading nail can be driven into the member to be nail-driven.
- the pressure of the combustion gas burned in the combustion chamber 5 is supplied from the gas conduit 26 to the feed piston/cylinder device 7 .
- the pressure of the combustion gas is not supplied to the feed cylinder 21 during the time while the valve member 41 is moving from its top dead center to its opening position.
- the feed piston 22 is moved in the retreat direction.
- the valve member 41 is caused to move to its top center, so that the gas existing within the gas conduit 26 on the feed cylinder 21 side is discharged to the atmosphere from the opening 39 formed in the lower end of the valve cylinder 40 . Therefore, the feed piston 22 is caused to move in the nail feed direction due to the urging force of the spring, and a new leading nail is supplied into the nose part 6 .
- the magazine there can be used not only the cylindrical-shaped magazine 3 but also a linear-shaped magazine which supplies a nail using a feed claw.
- Patent Application 2005-137773 filed on May 10, 2005 and thus the contents thereof are incorporated herein for reference.
- the present invention can be applied to a fastener feed device used in a gas combustion type driving tool.
Abstract
Description
- The present invention relates to a gas combustion type driving tool which comprises: a combustion chamber for explosively combusting a mixture gas produced by stirring and mixing together combustible gas and air; a drive piston/cylinder device which is driven by a combustion gas; a nose part for slidingly guiding a driver connected to the drive piston to thereby drive out a fastener therefrom; a feed piston/cylinder device for feeding the fastener to the nose part; and an operation delay device for delaying a retreat operation of a feed claw included in the feed piston/cylinder device.
- As an example of a gas combustion type driving tool, there is known a combustion gas drive type driving tool in which combustible gas is charged into a combustion chamber formed in a hermetically closed manner within a tool body to stir up a mixed gas composed of combustible gas and air within the combustion chamber, a stirred mixed gas is combusted within the combustion chamber to thereby generate a high pressure combustion gas, and the high pressure combustion gas is applied to a striking piston accommodated within a striking cylinder to thereby impactively drive the striking piston within the striking cylinder, whereby a nail supplied to a nose part disposed in the lower portion of the tool body can be driven into steel or concrete by a driver connected to the lower surface side of the drive piston. (JP-A-08-252806) In such combustion gas type driving tool, not only a container such as a gas cylinder filled with combustible gas is mounted into the tool but also a battery functioning as a power supply for igniting the combustible gas is mounted on the tool, thereby forming the tool as a portable tool. Thus, this type of driving tool can carry out an operation to drive a nail or a pin without being restrained by a power supply source for supplying power, such as compressed air or the like.
- In the above-mentioned gas combustion type driving tool, there is provided a feed device which sequentially feeds connected fasteners accommodated in a magazine into the nose part. As a feed device of this type, there is known a device structured such that connected fasteners, which are composed of a large number of fasteners connected together in a straight line, are accommodated in a sheath-shaped magazine, the connected fasteners are normally pressed toward the nose part by a spring having a constant output and, immediately after a fastener supplied to an eject opening formed in the nose part is driven, a next faster is supplied into the nose part.
- However, in this straight-shaped magazine, since the number of fasteners to be accommodated therein is small, it has been requested to mount a cylindrical-shaped magazine which can store a large number of connected fasteners wound in a coil-like shape. Here, as a feed device used to feed the fasteners accommodated in the cylindrical-shaped magazine, generally, there is known a feed piston/cylinder device. This is a device in which, on a feed piston slidably accommodated in a feed cylinder, there is provided a feed claw engageable with and removable from the connected fasteners accommodated in the magazine, and the feed claw is reciprocated in a feed direction for feeding the feed claw toward the nose part side and in a retreat direction opposite to the feed direction.
- Thus, it is possible to employ cylindrical-shaped magazine together with the previously described feed piston/cylinder device. In this case, it can be expected that the feed piston of the feed piston/cylinder device is made to reciprocate using a spring and the pressure of combustion gas in a combustion chamber. Referring further to the reciprocating operation, the feeding operation of the feed piston is executed by a spring, while the retreating operation of the feed piston is executed using the pressure of the combustion gas.
- However, in a structure where a combustion chamber and a feed cylinder are directly connected to each other, as shown in
FIG. 13 , the combustion gas is applied to both of the striking piston and feed piston (feed claw) substantially at the same time; therefore, almost simultaneously with the striking operation of the striking piston, the feed piston is also retreated, thereby causing the fasters to be unstable in attitude when they are driven. In other words, since the feed piston is caused to remain at a feed position due to the spring and the leading one of the fastener supplied into the nose part is thereby pressed by the feed claw, the leading faster is stabilized in attitude. While the fasteners are being driven out by a driver, preferably, the attitudes of the fasteners may be stable. However, when a striking device is actuated due to the pressure of the combustion gas and thus the driver is driven together with a striking piston whereby the faster is driven and the piston is retreated simultaneously, a force for pressing and holding the fastener is lost to thereby cause the faster to be unstable in attitude, which makes it impossible to positively drive the fastener in its proper attitude. - In view of this, as means for delaying the operation timing of the striking piston of the striking device, there is known a technology in which, by taking out the combustion gas from the striking cylinder at a position slightly lower than the top dead center of the striking piston, the operation timing of the striking piston is delayed.
- However, at the position slightly lower than the top dead center of the striking piston, the pressure of the combustion gas is reduced slightly, which in turn reduces the pressure to be applied to the feed cylinder of the feed device. This makes it necessary to increase the quantity of gas to be supplied into the feed cylinder, which also results in the increased size of the feed device.
- One or more embodiments of the invention provides a gas combustion type driving tool which not only can supply sufficiently high pressure to a feed piston/cylinder device functioning as a fastener feed device but also can delay the retreat operation of a feed piston included in the feed piston/cylinder device.
- According to one or more embodiments of the invention, a gas combustion type driving tool is provided with: a combustion chamber for explosively combusting a mixed gas produced by stirring and mixing combustible gas and air; a nose part for applying the thus produced high pressure combustion gas to a striking piston accommodated within a striking cylinder to impactively drive the striking piston within the striking cylinder to thereby slide and guide a driver connected to the lower surface side of the striking piston so as to drive out a fastener therefrom; a feed piston/cylinder device for reciprocating a feed claw engageable with and removable from connected fasteners accommodated in a magazine in a feed direction to feed it toward the nose part and in a retreat direction opposite to the feed direction; a spring disposed on the feed cylinder of the feed piston/cylinder device for normally urging a feed piston including the above-mentioned feed claw in the feed direction; a gas conduit interposed between the above combustion chamber and the above feed piston/cylinder; and an operation delay device disposed in the gas conduit for actuating the feed piston of the feed piston/cylinder device against the above spring in such a manner that it is delayed with respect to the operation of the striking piston caused by the combustion of the mixed gas within the combustion chamber.
- According to one or more embodiments of the invention, the operation delay device may also include a delay cylinder which is disposed in the intermediate portion of the gas, while one end of the delay cylinder is opened to the combustion chamber with the other end thereof opened to the feed cylinder. When a delay piston slidable within the delay cylinder due to the pressure of the combustion gas is slid from one end of the delay cylinder to the other end thereof due to the pressure of the combustion gas, air compressed within the delay cylinder is supplied from the other end of the delay cylinder to the feed cylinder. Also, according to one or more embodiments of the invention, the operation delay device may also include a gas storing space portion or a drawing portion which is formed in the gas conduit and is used to delay the supply of the combustion gas from the combustion chamber to the feed cylinder.
- Also, according to one or more embodiments of the invention, the operation delay device may also contain a timing valve device disposed in the intermediate portion of the gas conduit and including a valve member, in which, when the valve member is present in one end of the operation delay device, it closes the gas conduit and, when the valve member is moved to the other end of the operation delay device due to the pressure of the combustion gas, it opens the gas conduit.
- According to one or more embodiments of the invention, in the gas combustion type driving tool, there is interposed a gas conduit between the combustion chamber and feed piston/cylinder device and, in the gas conduit, there is disposed the operation delay device for actuating the feed piston of the feed piston/cylinder device against the above-mentioned spring in such a manner that such actuation is delayed with respect to the operation of the striking piston caused by the combustion of the mixed gas within the combustion chamber. Owing to this, with the combustion of the mixed gas within the combustion chamber, the striking piston is operated for striking and the feed piston is operated for retreating in such a manner that the operation of the feed piston is delayed with respect to the striking operation of the striking piston: that is, until the leading nail within the nose part is struck by the driver and driven out from the nose part by the striking operation of the striking piston, the feed piston is not operated for retreating. Therefore, when the leading nail is driven out from the nose part, it is pressed against the inner surface of the nose part and is thus stable in attitude. Thus, the leading nail can be driven out properly.
- Also, since the pressure of the combustion gas combusted within the combustion chamber (in the upper portion of the striking piston) is fed from the gas conduit to the feed piston/cylinder device, a sufficiently high pressure can be supplied to the feed piston/cylinder device. Further, in a structure where, in the intermediate portion of the gas conduit, there is disposed a delay cylinder having one end opened to the combustion chamber with the other end opened to the feed cylinder and, when a delay piston slidable within the delay cylinder due to the pressure of the combustion gas is slid from the above-mentioned one end of the delay cylinder to the other end thereof, air compressed within the delay cylinder is supplied from the other end of the other end of the delay cylinder to the feed cylinder, the supply of the gas pressure on the combustion chamber side can be delayed by the time necessary for the pressure of the air, which is compressed when the delay piston slides from one end to the other end of the delay cylinder, to rise so sufficiently as to be able to retreat the feed piston.
- Also, in a structure where, in the gas conduit, there is formed a gas storing space portion or a drawing portion for delaying the gas supply from the combustion chamber to the feed cylinder, since the supply speed of the gas pressure on the combustion chamber side is slowed down in the gas storing space portion or drawing portion, the retreat operation of the feed piston can be delayed by the time necessary for the air pressure to rise so sufficiently as to be able to retreat the feed piston.
- And, in a structure where, in the intermediate portion of the gas conduit, there is disposed a timing valve device including a valve member which, when the valve member is present in one end of the timing valve device, closes the gas conduit connecting together the combustion chamber and feed cylinder and, when the valve member is moved to the other end of the timing valve device due to the pressure of the combustion gas, opens the gas conduit, even when the mixed gas is burned within the combustion chamber, during the time while the valve member is moving from its top dead center position to the gas conduit opening position, the gas conduit remains closed and thus the pressure of the combustion gas is not supplied to the delay cylinder. Therefore, according to this structure, the retreat operation of the feed piston can be delayed by the time sufficient to retreat the feed piston.
- Other aspects and advantages of the invention will be apparent from the following description and the appended claims.
-
FIG. 1 is a longitudinal section view of the main portions of a gas combustion type nail driving tool, showing a state in which the driving tool is not in operation. -
FIG. 2 is a front view of the main portions of a nail driving tool, showing a state how a contact arm and a link member are mounted. -
FIG. 3 is a longitudinal section view of the nail driving tool, showing a state where its nail driving operation is started. -
FIG. 4 is a longitudinal section view of the nail driving tool, showing a state just after end of the nail driving operation. -
FIG. 5A is a longitudinal section view of the nail driving tool when viewed from behind, showing the nail feeding state of a nail feed claw. -
FIG. 5B is an explanatory view of a nail feed piston/cylinder device and a nail feed claw. -
FIG. 6 is a longitudinal section view of a delay piston/cylinder device, showing the retreat starting state of a nail feed piston including in the delay piston/cylinder device. -
FIG. 7 is a longitudinal section view of the delay piston/cylinder device, showing the retreat state of the nail feed piston of the delay piston/cylinder device. -
FIG. 8 is a longitudinal section view of a striking piston, showing the returning state thereof. -
FIG. 9 is a longitudinal section view of a gas combustion type nail driving tool, showing it together with a delay chamber device. -
FIG. 10 is a longitudinal section view of a gas combustion type nail driving tool, showing it together with a delay drawing device. -
FIG. 11 is a longitudinal section view of a gas combustion type nail driving tool, showing it together with a delay timing valve device. -
FIG. 12 is a timing chart, showing a difference between the timings of a feed claw and a striking piston when a delay operation device is provided. -
FIG. 13 is a timing chart, showing a difference between the timings a feed claw and striking piston when a combustion chamber and a feed cylinder are directly coupled to each other. - A: Delay piston/cylinder device
- B: Delay chamber device
- C: Timing valve device for delay
- 5: Combustion chamber
- 7: Feed piston/cylinder device
- 26: Gas conduit
- 28: Delay piston
- 35: Gas storing space portion
- 41: Valve member
- Now, description will be given below of exemplary embodiments according to the invention with reference to the accompanying drawings.
- Here, a driving tool according to the invention is not limited to a nail driving tool. That is, the invention can be applied to a driving tool which feeds connected fasteners such as headed bar members (nails or screws) and headless bar members (parallel pins) while transmitting power using the combustion of a mixed gas.
- In
FIG. 1 ,reference numeral 1 designates the body of a gas combustion type nail driving tool. To thebody 1, there are connected agrip 2 and amagazine 3; and, on thebody 1, there are provided a striking piston/cylinder device 4, acombustion chamber 5, anose part 6, and a feed piston/cylinder device 7 for nail feeding. - The striking piston/
cylinder device 4 is structured such that astriking piston 10 is slidably accommodated within astriking cylinder 9 and adriver 11 is connected to the lower portion of thestriking piston 10 integrally therewith. - The
combustion chamber 5 is defined by the upper end face of thestriking piston 10, an upper wall (a cylinder head) 13 formed within thestriking cylinder 9 and anupper housing 12, and a ring-shapedmovable sleeve 14 interposed between the upper end face of thestriking piston 10 andupper wall 13. And, when themovable sleeve 14 is moved upward, there is formed theclosed combustion chamber 5; and, when themovable sleeve 14 is moved downward, the upper portion of thecombustion chamber 5 is allowed to communicate with the atmosphere. - That is, the
movable sleeve 14, as shown inFIG. 2 , is linked through alink member 19 with acontact arm 15. Thelink member 19 is structured such that it includes a basket-shaped bottom portion 19 a disposed downwardly of thestriking cylinder 9 and an arm portion 19 b extending along the outer peripheral portion of thestriking cylinder 9 from the end portion of the basket-shaped bottom portion 19 a. The upper end of the arm portion 19 b is connected to themovable sleeve 14, while the basket-shaped bottom portion 19 a is energized downward by aspring 29 which is interposed between the lower surface of thestriking cylinder 9 and basket-shaped bottom portion 19 a. Also, thecontact arm 15 is disposed such that it can be slidingly moved in the vertical direction along thenose part 6. And, the lower end 15 a of thecontact arm 15 is projected from thenose part 6 and, when the lower end 15 a is pressed together with thenose part 6 against a member to be nail-driven P, the lower end 15 a can be moved upward with respect to the nose part 6 (seeFIG. 3 ). And, the lower surface of the basket-shaped bottom portion 19 a of thelink member 19 is engaged with the upper end 15 b of thecontact arm 15. Therefore, by pressing thenose part 6 against the member to be nail-driven P, thecontact arm 15 is moved upward with respect to thenose part 6 to push up thelink member 19 against the urging force of thespring 29, so that themovable sleeve 14 is moved upward. This forms theclosed combustion chamber 5. On the other hand, by detaching thenose part 6 from the member to be nail-driven P, thecontact arm 15 is relatively moved downward, and thelink member 19 andmovable sleeve 14 are respectively moved downward by the urging force of thespring 29, thereby opening thecombustion chamber 5 to the atmosphere. - As described above, when actuating the nail driving tool, the
movable sleeve 14 is relatively moved up to an upper position shown inFIG. 3 in linking with the operation to press thecontact arm 15 against the member to be nail-driven P, thereby shutting out the inside of thecombustion chamber 5 from the atmosphere. On the other hand, when the nail driving tool is lifted upward due to the reaction caused just after execution of a nail driving operation, thecontact arm 15, as shown inFIG. 4 , moves downward along thenose part 6 due to its own dead weight. At the then time, as will be discussed later, the pressure of the inside of thecombustion chamber 5 is held negative just after execution of the nail driving operation, whereas the movable sleeve 14 (and link member 19) is held at the same position. As a result of this, thecontact arm 15 and the basket-shaped portion 19 a of thelink member 19 are detached from each other. After then, when thestriking piston 10 rises up to its initial position and thecombustion chamber 5 is thereby opened to the atmoshpere, themovable sleeve 14 andlink member 19 are respectively moved downward due to the urging force of thespring 29, so that they are engaged again with thecontact arm 15 to thereby form an integral body. - In the
upper housing 12, there are provided aninjection nozzle 17 in communication with a gas container, and anignition plug 18 which ignites a mixed gas into combustion. Also, in theupper housing 12, there is arranged arotary fan 20 which is used to stir up combustible gas injected into thecombustion chamber 5 together with the air within thecombustion chamber 5 to thereby generate a mixed gas having a given air fuel ratio within thecombustion chamber 5. - The
nose part 6 guides the sliding movement of thedriver 11 and also opens to themagazine 3. - The feed piston/
cylinder device 7 is structured such that, as shown inFIGS. 5A and 5B , to afeed piston 22 slidably accommodated within afeed cylinder 21, there is connected afeed claw 23, and thefeed claw 23 together with thefeed piston 22 is engaged with and disengaged from connected nails N accommodated in themagazine 3 to thereby reciprocate thefeed claw 23 andfeed piston 22 in a nail feed direction to feed the connected nails N toward thenose part 6 and in a retreat direction opposite to the nail feed direction. When thefeed piston 22 is moved to its moving end in the feed direction, the leading nail N1 of the connected nails N is pushed into aneject opening 24 formed in thenose part 6. Therefore, in a state where thefeed piston 22 is present at its moving end position in the feed direction, the connected nails N also remain unmoved, whereby the leading nail N1 is held within theeject opening 24. - Next, on the
feed cylinder 21 of the feed piston/cylinder device 7, there is provided aspring 25 which normally energizes thefeed piston 22 in the feed direction. On the other hand, the portion of thefeed cylinder 21 on the opposite side of thespring 25 is connected through agas conduit 26 to thecombustion chamber 5. And, in the intermediate portion of thegas conduit 26, there is provided a delay piston/cylinder device A functioning as a delay device in which adelay piston 28 is slidably accommodated within adelay cylinder 27. - The
delay cylinder 27 is disposed such that its upper end is open to thecombustion chamber 5 and its lower end is open to thefeed cylinder 21. When thedelay piston 28 is slidingly moved from the upper end of thedelay cylinder 27 to the lower end thereof due to the pressure of the combustion gas, the air is compressed within thedelay cylinder 27; and, the pressure of the compressed air is supplied from the lower end of thedelay cylinder 27 to thefeed cylinder 21. - Also, on the lower end side portion of the
delay cylinder 27, there is disposed afirst check valve 31 which is used to take in the air from the atmosphere; and, downwardly of thedelay cylinder 27, there is disposed asecond check valve 32. In the intermediate portion of thegas conduit 26, between thesecond check valve 32 andfeed cylinder 21, there is interposed aswitch valve 33 which can be actuated in linking with the operation of thelink member 19. Specifically, normally, the valve stem 33 a of theswitch valve 33, as shown inFIG. 1 , is pressed into the bottom portion 19 a (for details, seeFIG. 3 ) of thelink member 19 and is thereby held at a position to open thegas conduit 26 to the atmosphere; whereas, in the nail driving operation, as shown inFIG. 3 , when the leading end of thenose part 6 is pressed against the member to be nail-driven P to move thecontact arm 15 upward with respect to the nail driving tool, the bottom portion 19 a is pushed and moved upward against the urging force of thespring 29 and, in linking with the upward movement of the bottom portion 19 a, the valve stem 33 a is moved to a position where it shuts off thegas conduit 26 and the atmosphere from each other. - Next, description will be given below of the operation of the above-mentioned operation delay device. Firstly, in the nail driving operation, as shown in
FIGS. 3 and 6 , when thenose part 6 is strongly pressed against the member to be nail-driven P to thereby move thecontact arm 15 upward with respect to the nail driving tool, not only themovable sleeve 14 is moved upward to thereby form theclosed combustion chamber 5 but also the combustible gas is injected from theinjection nozzle 17 into thecombustion chamber 5 and therotary fan 20 is rotated to stir and mix together the combustible gas and the air. Also, with the upward movement of thecontact arm 15, theswitch valve 33 shuts off thegas conduit 26 from the atmosphere. Next, when thetrigger 16 is pulled, theignition plug 18 ignites the mixed gas, with the result that the mixed gas is burned and is thereby expanded explosively. The pressure of the combustion gas acts onto the upper surface of thestriking piston 10 to thereby drive thestriking piston 10 downward, with the result that thedriver 11 strikes the leading nail N1 supplied into theeject opening 24 of thenose part 6 to thereby drive it into the member to be nail-driven P. - At the same time, since the pressure of the combustion gas within the
combustion chamber 5 acts from thegas conduit 26 also onto the upper surface of thedelay piston 28 of the delay piston/cylinder device A constituting the operation delay device, thedelay piston 28 is also slidingly moved from the upper end of thedelay cylinder 27 down to the lower end thereof. At the then time, because, into thedelay cylinder 27, there has already been taken the air from the atmosphere through thefirst check valve 31, and also because thesecond check valve 32 is disposed downwardly of thedelay cylinder 27, the above-mentioned air is compressed due to the downward sliding movement of thedelay piston 28. And, when the pressure of the compressed air rises up to a given pressure, the compressed air is supplied from the lower end of thedelay cylinder 27 to thefeed cylinder 21 against the urging force of thespring 34 of thesecond check valve 32, with the result that thefeed piston 22 is moved in the retreat direction. - In this manner, the supply of the pressure of the combustion gas from the
combustion chamber 5 to thefeed cylinder 21, when thedelay piston 28 is slidingly moved from the upper end of thedelay cylinder 27 down to the lower end thereof, can delay the above-mentioned retreat operation by the time necessary for the pressure of the air compressed within thedelay cylinder 27 to rise so sufficiently as to retreat thefeed piston 22. - As described above, after the
striking piston 10 actuates its striking operation with the combustion of the combustion gas in thecombustion chamber 5, thefeed piston 22 is caused to retreat. Specifically, as shown inFIG. 6 , since thefeed claw 23 of thefeed piston 22 remains unmoved until the leading nail held within thenose part 6 is struck and driven out from thenose part 6 by thedriver 11 due to the striking operation of thestriking piston 10, the leading nail is retained by the inner wall of theeject opening 24 of thenose part 6 and is thereby held stable in attitude. Therefore, the leading nail can be driven out properly. After then, as shown inFIG. 7 , when thedelay piston 28 arrives at its bottom dead center, thefeed piston 22 returns to its initial position. - By the way,
FIG. 12 shows a difference in the operation timing between the striking piston and feed claw (feed piston) in the nail driving operation. - When the nail driving operation is completed, since the temperature within the
combustion chamber 5 lowers suddenly, a space existing upwardly of thestriking piston 10 expanded to thestriking cylinder 9 becomes negative in pressure and is going to return to its initial capacity due to a difference between such negative pressure and the atmospheric pressure coming from below; and, therefore, as shown inFIGS. 4 and 8 , thestriking piston 10 moves or returns to its top dead center. Similarly, thedelay piston 28 also returns to its top dead center. On the other hand, when thecombustion chamber 5 is opened, the basket-shaped bottom portion 19 a is moved downward due to the urging force of thespring 29 to push down theswitch valve 33, whereby theswitch valve 33 opens thegas conduit 26 to the atmosphere, the compressed air is discharged from thefeed cylinder 21 through theswitch valve 33 to the atmosphere to thereby reduce the pressure of thefeed cylinder 21; and thus, thefeed piston 22, as shown inFIGS. 5A and 5B , is moved in the nail feed direction due to the urging force of thespring 26, with the result that a new leading nail is supplied into thenose part 6. - By the way, from the gas conduit to the feed piston/cylinder device, there is supplied the pressure of the combustion gas burned in the combustion chamber (in the upper portion of the striking piston). That is, a sufficiently high level of pressure can be supplied to the feed piston/cylinder device.
- Next,
FIG. 9 shows an operation delay device used instead of the above-mentioned delay piston/cylinder device A. This operation delay device B is structured by a delay chamber device which includes a gas storingspace portion 35 interposed between thecombustion chamber 5 and piston/cylinder device 7. By the way, inFIG. 9 , the parts of the operation delay device B, which are the same as those of the delay piston/cylinder device A, are given the same designations. A series of operations inFIG. 9 in the nail driving operation are also similar toFIGS. 3 , 6, 7 and 8, and thus the description thereof is omitted here. - According to the present structure, in the nail driving operation, when the mixed gas within the combustion chamber is ignited and burned in the same manner as described above, the pressure of the combustion gas drives the
striking piston 10 downward and thedriver 11 strikes the leading nail supplied into the eject opening of thenose part 6, thereby driving it into the member to be nail-driven. - At the same time, the pressure of the combustion gas burned in the
combustion chamber 5 is supplied from thegas conduit 26 to the feed piston/cylinder device 7. However, since there is formed the gas storingspace portion 35 between thecombustion chamber 5 and feed piston/cylinder device 7, thefeed piston 22 cannot be actuated until the combustion gas is filled into the gas storingspace portion 35 and the pressure within the gas storingspace portion 35 is thereby raised up to a given level. When the pressure within thegas conduit 25 rises up to a given level, the combustion gas is supplied to thefeed cylinder 21, so that thefeed piston 22 is caused to move in the retreat direction. - In this manner, since the supply of the gas pressure to the
feed cylinder 21 is not sufficient until the gas storingspace portion 35 is filled with the combustion gas to thereby increase its pressure up to the given pressure, the operation of thefeed piston 22 can be delayed by the time necessary for the above-mentioned combustion gas pressure to rise up to a level capable of retreating thefeed piston 22. Therefore, the leading nail can be driven into the member to be nail-driven while it is held in a stable attitude. - When the nail driving operation is completed, a space existing within the
combustion chamber 5 and upwardly of thestriking piston 10 becomes negative in pressure, so that thestriking piston 10 returns to its top dead center. Similarly, thegas conduit 26 also becomes negative in pressure and, therefore, thefeed piston 22 is moved in the feed direction due to the urging force of thespring 25, so that a new leading nail is supplied into thenose part 6. - Alternatively, the operation delay device may also be structured such that it includes in the
gas conduit 26 such adrawing portion 36 for delay as shown inFIG. 10 , instead of the gas storingspace portion 35. - In this case, since it takes time for the combustion gas to pass through the drawing
portion 36, the retreat operation of thefeed piston 22 can be delayed by the time necessary for the pressure of the combustion gas, which has passed through the drawingportion 36, to rise up to a level capable of retreating thefeed piston 22. - The position of formation of the drawing portion is not limited to the position shown in
FIG. 10 , but the drawing portion may be formed at any position in the gas conduit. - Next,
FIG. 11 shows an operation delay device different from the above-mentioned operation delay device. This operation delay device is structured by a timing valve device C for delay which is disposed in the intermediate portion of thegas conduit 26. InFIG. 11 , the parts of the timing valve device C, which are the same as those of the delay piston/cylinder device A, are given the same designations. A series of operations inFIG. 11 in the nail driving operation are also similar toFIGS. 3 , 6, 7 and 8, and thus the description thereof is omitted here. - The present delaying timing valve device C is structured in the following manner. That is, the device C includes a
valve cylinder 40 havingopenings gas conduit 26. Avalve member 41 is slidably accommodated within thevalve cylinder 40 and is normally energized by aspring 42 such that it is present at its top dead center. When thevalve member 41 is present at the top dead center, thegas conduit 26 is closed, whereas, when thevalve member 41 moves downward and, as shown by a broken line inFIG. 11 , passes through the side portion opening 38, thegas conduit 26 is opened. - According to the present operation delay device, in the nail driving operation, when the mixed gas within the combustion chamber is ignited and burned in the same manner as described above, owning to the pressure of the combustion gas, the leading nail can be driven into the member to be nail-driven.
- At the same time, the pressure of the combustion gas burned in the
combustion chamber 5 is supplied from thegas conduit 26 to the feed piston/cylinder device 7. However, since there is formed the delaying timing valve device C between thecombustion chamber 5 and feed piston/cylinder device 7, the pressure of the combustion gas is not supplied to thefeed cylinder 21 during the time while thevalve member 41 is moving from its top dead center to its opening position. And, when the pressure of the inside of thegas conduit 26 rises up to a given level, thefeed piston 22 is moved in the retreat direction. - In this manner, since the operation of the
feed piston 22 can be delayed by the time necessary for thevalve member 41 to move and open thegas conduit 26 to thereby raise the pressure up to a given level. Therefore, the leading nail can be driven into the member to be nail-driven while it is held in a stable attitude. - When the nail driving operation is completed, not only because the
striking piston 10 returns to its top dead center but also because thegas conduit 26 also becomes negative in pressure, thevalve member 41 is caused to move to its top center, so that the gas existing within thegas conduit 26 on thefeed cylinder 21 side is discharged to the atmosphere from theopening 39 formed in the lower end of thevalve cylinder 40. Therefore, thefeed piston 22 is caused to move in the nail feed direction due to the urging force of the spring, and a new leading nail is supplied into thenose part 6. By the way, as regards the magazine, there can be used not only the cylindrical-shapedmagazine 3 but also a linear-shaped magazine which supplies a nail using a feed claw. - Although the invention has been described heretofore in detail and with reference to the specific embodiments thereof, it is obvious to a person skilled in the art that various changes and modifications are also possible without departing from the spirit and scope of the invention.
- The present application is based on the Japanese Patent Application (Patent Application 2005-137773) filed on May 10, 2005 and thus the contents thereof are incorporated herein for reference.
- The present invention can be applied to a fastener feed device used in a gas combustion type driving tool.
Claims (6)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-137773 | 2005-05-10 | ||
JP2005137773A JP4923436B2 (en) | 2005-05-10 | 2005-05-10 | Gas fired driving tool |
PCT/JP2006/309044 WO2006120947A1 (en) | 2005-05-10 | 2006-04-28 | Fuel gas type hammering tool |
Publications (2)
Publication Number | Publication Date |
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US20090057365A1 true US20090057365A1 (en) | 2009-03-05 |
US7556182B2 US7556182B2 (en) | 2009-07-07 |
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Application Number | Title | Priority Date | Filing Date |
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US11/919,035 Active 2026-07-13 US7556182B2 (en) | 2005-05-10 | 2006-04-28 | Gas combustion type driving tool |
Country Status (9)
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---|---|
US (1) | US7556182B2 (en) |
EP (1) | EP1880804B1 (en) |
JP (1) | JP4923436B2 (en) |
KR (1) | KR100881259B1 (en) |
CN (1) | CN100553890C (en) |
AU (1) | AU2006245140A1 (en) |
CA (1) | CA2606607A1 (en) |
DE (1) | DE602006013614D1 (en) |
WO (1) | WO2006120947A1 (en) |
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US20160114470A1 (en) * | 2013-06-25 | 2016-04-28 | Illinois Tool Works Inc. | Driving tool for driving fastening means into a workpiece |
US9381636B2 (en) | 2008-05-16 | 2016-07-05 | Max Co., Ltd. | Fuel cartridge and gas-combustion type driving tool |
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US20170361442A1 (en) * | 2016-06-20 | 2017-12-21 | Black & Decker Inc. | Feed Piston Pressure Tube |
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US10688641B2 (en) | 2013-06-25 | 2020-06-23 | Illinois Tool Works Inc. | Driving tool for driving fastening means into a workpiece |
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US8302832B2 (en) * | 2007-06-21 | 2012-11-06 | Illinois Tool Works Inc. | Fastener feeder delay for fastener driving tool |
JP5067045B2 (en) * | 2007-07-04 | 2012-11-07 | マックス株式会社 | Gas fired driving tool |
JP5067046B2 (en) * | 2007-07-04 | 2012-11-07 | マックス株式会社 | Gas fired driving tool |
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EP2886160A1 (en) | 2013-12-23 | 2015-06-24 | Theraclion SA | Device for treatment of a tissue and method of preparation of an image of an image-guided device for treatment of a tissue |
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-
2005
- 2005-05-10 JP JP2005137773A patent/JP4923436B2/en not_active Expired - Fee Related
-
2006
- 2006-04-28 CN CNB2006800162692A patent/CN100553890C/en active Active
- 2006-04-28 CA CA002606607A patent/CA2606607A1/en not_active Abandoned
- 2006-04-28 WO PCT/JP2006/309044 patent/WO2006120947A1/en active Application Filing
- 2006-04-28 DE DE602006013614T patent/DE602006013614D1/en active Active
- 2006-04-28 US US11/919,035 patent/US7556182B2/en active Active
- 2006-04-28 EP EP06745903A patent/EP1880804B1/en active Active
- 2006-04-28 KR KR1020077026061A patent/KR100881259B1/en not_active IP Right Cessation
- 2006-04-28 AU AU2006245140A patent/AU2006245140A1/en not_active Abandoned
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US20100176175A1 (en) * | 2006-09-19 | 2010-07-15 | Junichi Tamura | Gas combustion-type driving tool |
US7938303B2 (en) * | 2006-09-19 | 2011-05-10 | Max Co., Ltd. | Gas combustion-type driving tool |
US9381636B2 (en) | 2008-05-16 | 2016-07-05 | Max Co., Ltd. | Fuel cartridge and gas-combustion type driving tool |
US20110192879A1 (en) * | 2010-02-08 | 2011-08-11 | Credo Technology Corporation | Pneumatic Nailer with Sleeve Actuated Piston Return |
US8317069B2 (en) * | 2010-02-08 | 2012-11-27 | Robert Bosch Gmbh | Pneumatic nailer with sleeve actuated piston return |
WO2013033054A1 (en) * | 2011-08-31 | 2013-03-07 | Illinois Tool Works Inc. | High efficiency engine for combustion nailer |
US9492915B2 (en) | 2011-08-31 | 2016-11-15 | Illinois Tool Works Inc. | High efficiency engine for combustion nailer |
US10493608B2 (en) | 2011-08-31 | 2019-12-03 | Illinois Tool Works Inc. | High efficiency engine for combustion nailer |
US11229995B2 (en) | 2012-05-31 | 2022-01-25 | Black Decker Inc. | Fastening tool nail stop |
US11179836B2 (en) | 2012-05-31 | 2021-11-23 | Black & Decker Inc. | Power tool having latched pusher assembly |
US10888981B2 (en) | 2012-05-31 | 2021-01-12 | Black & Decker Inc. | Power tool having latched pusher assembly |
US11491622B2 (en) | 2013-06-25 | 2022-11-08 | Illinois Tool Works Inc. | Driving tool for driving fastening means into a workpiece |
US20160114470A1 (en) * | 2013-06-25 | 2016-04-28 | Illinois Tool Works Inc. | Driving tool for driving fastening means into a workpiece |
US10688641B2 (en) | 2013-06-25 | 2020-06-23 | Illinois Tool Works Inc. | Driving tool for driving fastening means into a workpiece |
US11224959B2 (en) * | 2013-06-25 | 2022-01-18 | Illinois Tool Works Inc. | Driving tool for driving fastening means into a workpiece |
US10596690B2 (en) * | 2013-06-25 | 2020-03-24 | Illinois Tool Works Inc. | Driving tool for driving fastening means into a workpiece |
US20150014389A1 (en) * | 2013-07-04 | 2015-01-15 | Max Co., Ltd. | Fastener driving tool |
US9789595B2 (en) * | 2013-07-04 | 2017-10-17 | Max Co., Ltd. | Fastener driving tool |
US10058985B2 (en) | 2013-07-16 | 2018-08-28 | Hilti Aktiengesellschaft | Control method for hand-held machine tool |
TWI458605B (en) * | 2013-08-09 | 2014-11-01 | Basso Ind Corp | A nail device for a nail gun |
US10759031B2 (en) | 2014-08-28 | 2020-09-01 | Power Tech Staple and Nail, Inc. | Support for elastomeric disc valve in combustion driven fastener hand tool |
WO2016201003A1 (en) * | 2015-06-08 | 2016-12-15 | Power Tech Staple and Nail, Inc. | Support for elastomeric disc valve in combustion driven fastener hand tool |
US20170361442A1 (en) * | 2016-06-20 | 2017-12-21 | Black & Decker Inc. | Feed Piston Pressure Tube |
US11491623B2 (en) | 2019-10-02 | 2022-11-08 | Illinois Tool Works Inc. | Fastener driving tool |
US11897104B2 (en) | 2019-10-02 | 2024-02-13 | Illinois Tool Works Inc. | Fastener driving tool |
Also Published As
Publication number | Publication date |
---|---|
KR100881259B1 (en) | 2009-02-05 |
CA2606607A1 (en) | 2006-11-16 |
CN100553890C (en) | 2009-10-28 |
US7556182B2 (en) | 2009-07-07 |
EP1880804A1 (en) | 2008-01-23 |
JP4923436B2 (en) | 2012-04-25 |
EP1880804A4 (en) | 2009-07-08 |
DE602006013614D1 (en) | 2010-05-27 |
AU2006245140A1 (en) | 2006-11-16 |
WO2006120947A1 (en) | 2006-11-16 |
EP1880804B1 (en) | 2010-04-14 |
CN101175609A (en) | 2008-05-07 |
JP2006315102A (en) | 2006-11-24 |
KR20070120185A (en) | 2007-12-21 |
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